Which will be chemically more reactive: element $A$ with atomic number $17$ or element $B$ with atomic number $16$? Give a reason as well.
(A) $(i)$ Element $A$ (Chlorine) has an atomic number of $17$,and its electronic configuration is $(2, 8, 7)$. It needs to gain $1$ electron to complete its octet.
$(ii)$ Element $B$ (Sulfur) has an atomic number of $16$,and its electronic configuration is $(2, 8, 6)$. It needs to gain $2$ electrons to complete its octet.
$(iii)$ Reactivity in non-metals is determined by the ease of gaining electrons. Since element $A$ requires only $1$ electron to achieve a stable noble gas configuration,it is more chemically reactive than element $B$,which requires $2$ electrons.
$(ii)$ Element $B$ (Sulfur) has an atomic number of $16$,and its electronic configuration is $(2, 8, 6)$. It needs to gain $2$ electrons to complete its octet.
$(iii)$ Reactivity in non-metals is determined by the ease of gaining electrons. Since element $A$ requires only $1$ electron to achieve a stable noble gas configuration,it is more chemically reactive than element $B$,which requires $2$ electrons.
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Similar Questions
$(a)$ What are isobars?
$(b)$ Atomic number of an element $Y$ is $17$.
$(i)$ Write its electronic configuration.
$(ii)$ What is the number of valence electrons in $Y$?
$(iii)$ How many electrons are needed to complete the octet of $Y$?
$(iv)$ Is it a metal or non-metal?
$(c)$ The valency of $Na$ is $1$ and not $7$. Give reason.
$(b)$ Atomic number of an element $Y$ is $17$.
$(i)$ Write its electronic configuration.
$(ii)$ What is the number of valence electrons in $Y$?
$(iii)$ How many electrons are needed to complete the octet of $Y$?
$(iv)$ Is it a metal or non-metal?
$(c)$ The valency of $Na$ is $1$ and not $7$. Give reason.
Medium
View Solution$(a)$ Define the following terms with one example each:
$(i)$ Isotope
$(ii)$ Isobar
$(b)$ Name the elements whose isotopes are used in:
$(i)$ Nuclear Reactor
$(ii)$ Treatment of cancer
$(i)$ Isotope
$(ii)$ Isobar
$(b)$ Name the elements whose isotopes are used in:
$(i)$ Nuclear Reactor
$(ii)$ Treatment of cancer
Medium
View SolutionWhich of the following statements are true for an element?
$(i)$ Atomic number $=$ number of protons $+$ number of electrons
$(ii)$ Mass number $=$ number of protons $+$ number of neutrons
$(iii)$ Atomic mass $=$ number of protons $=$ number of neutrons
$(iv)$ Atomic number $=$ number of protons $=$ number of electrons
$(i)$ Atomic number $=$ number of protons $+$ number of electrons
$(ii)$ Mass number $=$ number of protons $+$ number of neutrons
$(iii)$ Atomic mass $=$ number of protons $=$ number of neutrons
$(iv)$ Atomic number $=$ number of protons $=$ number of electrons
Medium
View SolutionThe following data represents the distribution of electrons,protons,and neutrons in atoms of four elements $A, B, C, D.$
Element Protons,Neutrons,Electrons $A$ $9, 10, 9$ $B$ $16, 16, 16$ $C$ $12, 12, 12$ $D$ $17, 22, 17$
Answer the following questions:
$(a)$ Give the electronic distribution of element $B.$
$(b)$ The valency of element $A$.
$(c)$ The atomic number of element $B.$
$(d)$ The mass number of element $D$.
| Element | Protons,Neutrons,Electrons |
| $A$ | $9, 10, 9$ |
| $B$ | $16, 16, 16$ |
| $C$ | $12, 12, 12$ |
| $D$ | $17, 22, 17$ |
Answer the following questions:
$(a)$ Give the electronic distribution of element $B.$
$(b)$ The valency of element $A$.
$(c)$ The atomic number of element $B.$
$(d)$ The mass number of element $D$.
Medium
View SolutionWrite two differences between isobars and isotopes.
Easy
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